Fig. 7
Non-dimensional revolution frequency Ωx for different confinement values χ for initial positions a \(({\hat{x}}_{0},{\hat{z}}_{0})=(0.0033,-0.31)\) and b \(({\hat{x}}_{0},{\hat{z}}_{0})=(0.0033,0.31)\). c Non-dimensional residence time \({T}_{{{{\rm{res}}}}}\) for different confinement values χ and all studied initial positions. Each curve in a, b is shown for its range \([0,{T}_{{{{\rm{res}}}}}]\) during which the particle is located in the central junction area. Thus each curve has a different range
